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- W2120111692 abstract "The South American Pleistocene mammal fauna includes great-sized animals that have intrigued scientists for over two centuries. Here we intend to update the knowledge on its palaeoecology and provide new evidence regarding two approaches: energetics and population density and relative abundance of fossils per taxa. To determine whether an imbalance exists, population density models were applied to several South American fossil faunas and the results compared to those that best describe the palaeoecology of African faunas. The results on the abundance study for Uruguay and the province of Buenos Aires during the Lujanian stage/age reveal that bulk-feeding ground sloths (Lestodon and Glossotherium) were more represented in the first territory, while the more selective Scelidotherium and Megatherium were more abundant in the second. Although the obtained values were corrected to avoid size-related taphonomic biases, linear regressions of abundance vs. body mass plots did not fit the expected either for first or second consumers. South American Pleistocene faunas behave differently from what models suggest they should. Changes in sea level and available area could account for these differences; the possibility of a floodplain in the area then emerged could explain seasonal changes, which would modify the calculations of energetics and abundance." @default.
- W2120111692 created "2016-06-24" @default.
- W2120111692 creator A5039173159 @default.
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- W2120111692 date "2014-03-01" @default.
- W2120111692 modified "2023-10-01" @default.
- W2120111692 title "Splendid oddness: revisiting the curious trophic relationships of South American Pleistocene mammals and their abundance" @default.
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- W2120111692 doi "https://doi.org/10.1590/0001-3765201420120010" @default.
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